Shared Sequencing

Definition ∞ Shared sequencing involves multiple rollup solutions utilizing a common, decentralized network of sequencers to order and batch their transactions before submission to the base layer. This shared approach aims to improve cross-rollup composability and reduce the centralization risks associated with individual rollup sequencers. It offers a neutral ordering service.
Context ∞ Shared sequencing is a rapidly developing area of research and implementation within the rollup ecosystem, addressing challenges related to censorship resistance and interoperability. The goal is to establish a robust and fair mechanism for transaction ordering across diverse layer-2 networks, thereby fostering a more cohesive and efficient decentralized application environment.

The detailed perspective showcases a metallic blue, granular-textured mechanism, centralizing on a cylindrical validator node component secured by screws. Interconnected block-like structures suggest a modular architecture crucial for distributed ledger technology DLT. Thin, silver wires traverse the components, symbolizing data transmission pathways within a blockchain network. The robust construction and precise engineering evoke a Layer 2 scaling solution or a dedicated enterprise blockchain infrastructure, highlighting secure protocol governance and efficient interoperability within a complex digital asset ecosystem.

→Gateway Delegation

→Proposer Builder Separation

→Rollup Architecture

L1 Proposers Decentralize Rollup Sequencing Using Delegation and Preconfirmations

Based sequencing leverages the L1 validator set's economic security to credibly neutralize L2 sequencers, unlocking trust-minimized interoperability and high-performance preconfirmations.

A transparent, interconnected network structure, resembling a molecular lattice, showcases blue liquid flowing through spherical nodes and connecting channels. This visual metaphor represents a decentralized ledger technology DLT architecture, illustrating validator nodes processing transaction throughput. The intricate network topology emphasizes cross-chain interoperability protocols and efficient data packet routing within a distributed network, crucial for scalable smart contract execution and digital asset flow in DeFi infrastructure.

→User Experience Abstraction

→Unified Liquidity

→Web3 Infrastructure

Avail Nexus Launches Unified Cross-Chain Execution Layer with Intent-Driven Architecture

The Nexus layer abstracts multichain complexity via intent routing, establishing a foundational primitive for seamless, unified dApp execution.

A polished metallic square plate, featuring a layered circular component, is encased within a translucent, wavy, blue-tinted material. This design represents a cryptographic secure element, vital for digital asset security. It functions as a hardware wallet component, safeguarding private keys and seed phrases in cold storage. The resilient enclosure ensures tamper-proof protection for blockchain infrastructure, enabling secure transaction signing for decentralized finance and managing tokenized assets.

→Shared Sequencing

→Proposer Builder Separation

→Rollup Architecture

L1 Proposers Decouple Rollup Sequencing for Maximum Decentralization

The Based Sequencing model shifts rollup transaction ordering to the L1 validator set, fundamentally inheriting L1 security and eliminating sequencer centralization risk.

Two high-tech modular components, rendered in stark white and metallic silver with translucent blue segments, are depicted in close alignment, illustrating a critical cross-chain communication interface. Intense blue energy rings radiate between them, symbolizing active protocol execution and the secure transfer of digital asset data packets. The intricate internal structures visible through the blue casings suggest complex cryptographic computations within validator nodes, facilitating seamless interoperability across disparate DLT ecosystems. This abstract representation highlights advanced blockchain infrastructure mechanisms.

→Transaction Ordering

→L2 Liveness

→Layer-2 Security

Delegating Layer Two Sequencing to Base Layer Proposers Secures Rollups

Based sequencing transfers L2 transaction ordering to the credibly neutral L1 validator set, fundamentally resolving sequencer centralization risk and enabling atomic composability.

A sophisticated, abstract mechanism with a central white circular core, featuring radiating segments, connects to transparent, faceted components. This sequence extends into a blurred foreground and background, forming a chain-like structure. The composition highlights a dynamic process, suggesting cryptographic primitives at work within a distributed ledger. Each transparent unit could represent a validated block, ensuring transaction finality. The overall design evokes a scalable blockchain architecture, facilitating secure peer-to-peer network operations and maintaining data immutability within a decentralized finance ecosystem.

→Censorship Resistance

→L1 Validator Set

→Economic Security Inheritance

Based Sequencing Decouples Rollup Liveness from Centralized Sequencers

Based Sequencing cryptographically leverages Layer 1 validators for rollup transaction ordering, resolving L2 centralization risk and ensuring robust liveness.

A multifaceted crystalline structure, resembling a diamond, is centrally positioned within a complex, interconnected network of circuit board elements and abstract geometric shapes. This visual metaphor represents the intrinsic value and immutability of digital assets within a decentralized ecosystem. The intricate circuitry signifies the underlying blockchain infrastructure, emphasizing cryptographic security and distributed ledger principles. The geometric forms suggest the scalability and interconnectedness of blockchain networks, highlighting the potential for advanced smart contract execution and tokenization of real-world assets, all underpinned by robust consensus mechanisms.

→Mechanism Design

→Liveness Guarantee

→Transaction Ordering

Set Byzantine Consensus Decouples Rollup Sequencing from Centralized Control

The research introduces Set Byzantine Consensus to construct a Decentralized Arranger, fundamentally solving rollup centralization by separating transaction content agreement from final ordering.

→Modular Blockchain

→BFT Consensus

→Decentralized Sequencing